CN218633465U - Stator casing and axial magnetic field motor stator - Google Patents
Stator casing and axial magnetic field motor stator Download PDFInfo
- Publication number
- CN218633465U CN218633465U CN202223192000.5U CN202223192000U CN218633465U CN 218633465 U CN218633465 U CN 218633465U CN 202223192000 U CN202223192000 U CN 202223192000U CN 218633465 U CN218633465 U CN 218633465U
- Authority
- CN
- China
- Prior art keywords
- stator
- metal plate
- metal
- core mounting
- iron core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model provides a stator casing and axial magnetic field motor stator, wherein the stator casing comprises a metal plate, a plurality of iron core installation parts arranged at intervals on the circumference are arranged on the metal plate, a plurality of stator flow breaking seams are arranged on the metal plate, and the stator flow breaking seams are communicated with the iron core installation parts and the inner edge of the metal plate along the radial direction so as to block the eddy current path; a metal bearing seat connected to the inner edge of the metal plate; and the insulating piece is connected between the metal bearing seat and the inner edge of the metal plate, so that the stator flow break joint is prevented from contacting the metal bearing seat to damage the flow isolating effect under the condition of ensuring better supporting capacity, and the effect of reducing eddy current loss is realized.
Description
Technical Field
The utility model relates to an axial magnetic field motor field especially relates to a stator casing and axial magnetic field motor stator.
Background
The axial magnetic field motor is also called a disc motor, has the advantages of small volume, high torque density, high power density, high efficiency and the like, and is widely applied to the fields of electric automobiles, general industries and the like. The motor includes a housing, a stator, and a rotor, the stator and the rotor being disposed inside the housing. The core in the stator can form eddy currents in the changing axial magnetic field, and the eddy currents can generate heat effect and mechanical effect, and have adverse effect on the motor, for example, eddy current loss reduces the operation efficiency of the motor.
In the existing measures for inhibiting the eddy current loss, the material is mostly changed, namely, the part for fixing the iron core is replaced by a non-metal material by a metal material. For example, the utility model with the patent number CN2022103256832, entitled disc motor, defines the fixing frame for fixing the iron core in the stator as a non-metal frame to avoid the excessive eddy current loss of the motor. However, this cannot be done only in the specific environment where metallic materials are used, and non-metallic materials do not meet the requirements of better mechanical properties than metallic materials.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a under the prerequisite that does not change metal material's application, provide a stator casing and axial magnetic field motor stator.
According to the utility model discloses an aim, the utility model provides a stator casing, include:
the stator current-breaking joint comprises a metal plate, wherein a plurality of iron core mounting parts which are circumferentially arranged at intervals are arranged on the metal plate, a plurality of stator current-breaking joints are arranged on the metal plate, and the stator current-breaking joints are communicated with the iron core mounting parts and the inner edge of the metal plate along the radial direction;
a metal bearing seat connected to an inner edge of the metal plate;
at least one insulator connected between the metal bearing housing and the inner edge of the metal plate.
In a preferred embodiment, the metal plate includes a substrate portion, an inner edge portion and an outer edge portion, the substrate portion is connected between the inner edge portion and the outer edge portion to form a coil receiving cavity on at least one side of the substrate portion in an axial direction, and the core mounting portion is disposed on the substrate portion.
In a preferred embodiment, the iron core mounting portion axially penetrates through the substrate portion and communicates with the coil accommodating cavities located on two axial sides of the substrate portion.
As a preferred embodiment, the method further comprises the following steps:
and the pressing plate is clamped with the metal bearing seat and wraps the inner edge part, and an insulating part is arranged between the pressing plate and the inner edge part.
In a preferred embodiment, the metal bearing seat includes a bearing end portion and a bearing bottom portion connected to each other, the bearing end portion and the pressure plate are respectively connected to two axial end surfaces of the inner side portion, the bearing bottom portion is connected to an inner ring of the inner side portion, and the pressure plate is connected to the bearing bottom portion in a snap-fit manner.
In a preferred embodiment, the stator shut-off slot extends axially through the metal plate.
As a preferred embodiment, the number of the stator current-breaking seams is the same as that of the iron core mounting parts, and each iron core mounting part is correspondingly communicated with one stator current-breaking seam.
As preferred embodiment, the iron core installation department is trapezoidal, the trapezoidal upper base of iron core installation department sets up inwards, the trapezoidal lower base of iron core installation department sets up outwards.
According to the utility model discloses a further purpose, the utility model also provides an axial magnetic field motor stator, including the stator casing of above-mentioned embodiment, axial magnetic field motor stator still includes:
the iron cores are arranged on the iron core mounting parts respectively;
and the outer ring of each iron core is provided with at least one coil.
In a preferred embodiment, the iron core is wrapped by at least one insulating layer, and the coil and the metal plate are arranged outside the insulating layer.
Compared with the prior art, the technical scheme has the following advantages:
the stator flow breaking seam is formed in the metal plate to block an eddy path, so that the effect of reducing eddy loss is achieved, and the running reliability of the motor is guaranteed. In addition, the metal bearing seat is additionally arranged at the inner edge of the metal plate communicated with the stator flow-breaking seam, so that the supporting capacity and the strength of the metal plate are ensured besides the connection and the support of the bearing. In addition, the insulating part is additionally arranged between the metal bearing seat and the metal plate, so that the phenomenon that the stator flow-breaking seam is contacted with the metal bearing seat to damage the flow-isolating function is avoided under the condition of ensuring better supporting capacity, and the purpose of reducing eddy current loss is realized on the premise of not changing the application of metal materials.
The present invention will be further described with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of a stator casing according to the present invention;
fig. 2 is a schematic structural view of the metal plate of the present invention;
fig. 3 is a schematic structural diagram of the stator of the present invention;
fig. 4 is an assembly diagram of the iron core and the insulating layer according to the present invention;
fig. 5 is a schematic structural view of the axial magnetic field motor of the present invention;
fig. 6 is a schematic view of the eddy current path in the stator of the present invention.
In the figure: 100 stator casing, 1001 stator eddy current path, 110 metal plate, 111 substrate part, 112 inner side part, 113 outer side part, 1101 iron core mounting part, 1102 stator flow interruption seam, 1103 coil accommodating cavity, 120 metal bearing seat, 121 bearing end part, 122 bearing bottom part, 130 insulator, 140 pressing plate, 200 iron core, 300 coil, 400 insulating layer, 500 rotor, 510 rotor disc, 520 magnetic steel, 600 rotating shaft and 700 bearing.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.
First embodiment
As shown in fig. 1 and 2, the stator casing 100 includes:
a metal plate 110, wherein a plurality of iron core mounting parts 1101 arranged at intervals on the circumference are arranged on the metal plate 110, a plurality of stator cut-off slots 1102 are arranged on the metal plate 110, and the stator cut-off slots 1102 are communicated with the iron core mounting parts 1101 and the inner edge of the metal plate 110 in the radial direction;
a metal bearing housing 120, the metal bearing housing 120 being connected to an inner edge of the metal plate 110;
at least one insulating member 130, the insulating member 130 being connected between the metal housing 120 and the inner edge of the metal plate 110.
The stator cutoff slot 1102 is formed in the metal plate 110 to block an eddy current path, so that eddy current loss is reduced and suppressed, thereby ensuring the reliability of the operation of the motor. In addition, the metal bearing seat 120 is additionally arranged at the inner edge of the metal plate 110, which is communicated with the stator flow-breaking slit 1102, so that the problem of strength reduction caused by the opening of the stator flow-breaking slit 1102 on the metal plate 110 is avoided, and the supporting capacity and the strength of the metal plate 110 are ensured. Referring to fig. 5, the inner ring of the metal bearing seat 120 is used to support a bearing 700, and the insulating member 130 is additionally arranged between the metal bearing seat 120 and the metal plate 110, so that the stator cutoff crack 1102 is prevented from contacting the metal bearing seat 120 to damage the flow separation function under the condition of ensuring better supporting capability, thereby achieving the purpose of reducing eddy current loss without changing the application of metal materials.
When metal is placed in a changing magnetic field or moves in a non-uniform magnetic field, induced electromotive force is generated in the metal, and because the resistance of the metal is small, even if the induced electromotive force is not large, strong current can be generated, the current flows in the metal along a closed loop, like the vortex in water, so that the vortex is called vortex current, and the vortex can generate thermal effect and mechanical effect. The cores are in direct contact with and connected to the metal plate, resulting in the formation of stator eddy current paths 1001 into an elliptical loop as shown in fig. 6, wherein each core 200 generates a corresponding loop of stator eddy current paths 1001. By forming the stator cutoff slots 1102 radially arranged on the metal plate 110, the stator eddy current path 1001 can be blocked, and referring to fig. 2, the effect of reducing eddy current loss can be achieved.
As shown in fig. 1 and 2, the metal plate 110 includes a substrate portion 111, an inner side portion 112 and an outer side portion 113, the substrate portion 111 is connected between the inner side portion 112 and the outer side portion 113 to form a coil receiving cavity 1103 on at least one side of the substrate portion 111 in an axial direction, and the core mounting portion 1101 is disposed on the substrate portion 111.
Specifically, the axial dimensions of the substrate portions 111 are smaller than the axial dimensions of the inner side portion 112 and the outer side portion 113, and the substrate portions 111 are respectively connected to the centers of the inner side portion 112 and the outer side portion 113, so that the coil receiving cavities 1103 can be respectively formed on both sides of the metal plate 110 in the axial direction, that is, the number of the coil receiving cavities 1103 is two. At this time, the core mounting portion 1101 has a hole structure, the core mounting portion 1101 axially penetrates the substrate portion 111, and the core mounting portion 1101 is communicated with the core mounting portions 1101 on both sides of the substrate portion 111 in the axial direction. The axial magnetic field motor with the stator suitable for the single-stator double-rotor is obtained by assembling, and the reference figure 5 shows that the axial magnetic field motor is suitable for the single-stator double-rotor motor.
Referring to fig. 2, the core mounting portion 1101 is trapezoidal, the trapezoidal upper base of the core mounting portion 1101 is disposed inward, and the trapezoidal lower base of the core mounting portion 1101 is disposed outward. That is, the stator cutoff slots 1102 extend to communicate with the trapezoidal upper bottom of the core mounting portion 1101 and the inner edge of the metal plate 110.
With continued reference to fig. 1 and 2, the stator shut-off slots 1102 extend axially through the metal plate 110. The number of the stator blocking slits 1102 is the same as that of the core mounting portions 1101, and each core mounting portion 1101 is correspondingly communicated with one stator blocking slit 1102.
As shown in fig. 1, the stator case 100 further includes:
and the pressing plate 140 is clamped with the metal bearing seat 120 and wraps the inner side part 112, and an insulating piece 130 is arranged between the pressing plate 140 and the inner side part 112.
The metal bearing housing 120 functions to support the bearing 700 and also to be combined with the pressure plate 140. So as to extend the axial dimension of the inner edge 112 for forming the coil receiving cavity 1103. The pressing plate 140 and the metal bearing seat 120 are spliced to achieve manufacturability, and facilitate arrangement of the insulating member 100, wherein the insulating member 130 is respectively arranged between the pressing plate 140 and the metal bearing seat 120 and the metal plate 110, and the insulating member 130 may be a rubber ring, so that an insulating and blocking effect can be ensured. And the metal bearing seat 120, the pressing plate 140 and the metal plate 110 can be fixed by glue. The pressing plate 140 may be made of a high-strength non-metallic material, such as carbon fiber or glass fiber, in addition to a metal material.
Further, the metal bearing housing 120 includes a bearing end portion 121 and a bearing bottom portion 122 connected to each other, the bearing end portion 121 and the pressure plate 140 are respectively connected to both axial end surfaces of the inner side portion 112, the bearing bottom portion 122 is connected to an inner ring of the inner side portion 112, and the pressure plate 140 is snap-connected to the bearing bottom portion 122. Wherein the insulating member 130 is disposed between each of the bearing end portion 121 and the bearing bottom portion 122 and the inner side portion 112.
In summary, the stator cutoff slot 1102 is formed in the metal plate 110 to block an eddy current path, so that an effect of reducing eddy current loss is achieved, and reliability of motor operation is ensured. In addition, the metal bearing seat 120 is additionally arranged at the inner edge of the metal plate 110 communicated with the stator flow-breaking slit 1102, so that the support capability and the strength of the metal plate 110 are ensured besides the connection and the support of the bearing 700. In addition, the insulating member 130 is additionally arranged between the metal bearing seat 120 and the metal plate 110, so that the stator cutoff seam 1102 is prevented from contacting the metal bearing seat 120 to damage the flow separation effect under the condition of ensuring better supporting capacity, and the purpose of reducing eddy current loss is achieved on the premise of not changing the application of metal materials.
Second embodiment
The stator housing 100 of the second embodiment is different from the first embodiment in that the core mounting portion 1101 has a slot structure, that is, the number of the coil receiving cavities 1103 is one, and the assembled stator is suitable for a single-stator single-rotor or double-stator single-rotor axial magnetic field motor.
Third embodiment
As shown in fig. 3, the axial-field motor stator includes the stator casing 100 of any of the above embodiments, and further includes:
a plurality of iron cores 200, wherein each iron core mounting part 1101 is provided with one iron core 200;
a plurality of coils 300, at least one coil 300 being disposed on an outer circumference of each of the cores 200.
Since the stator casing 100 is adopted in the axial-field motor stator, the stator casing 100 of the above embodiment can be referred to for the beneficial effects of the axial-field motor stator.
When the core mounting portion 1101 is a hole structure, the core 200 penetrates the core mounting portion 1101, air gap surfaces are formed on two axial end surfaces of the core 200 respectively, and the stator obtained by the assembly is correspondingly applicable to an axial magnetic field motor with a single stator and double rotors. Specifically, the axial both sides of metal sheet 110 are provided with a coil holding chamber 1103 respectively, iron core installation department 1101 communicates two coil holding chamber 1103, with iron core 200 wears to locate behind the iron core installation department 1101, one is established to the both ends cover respectively of iron core 200 coil 300, and each keep one in the coil holding chamber 1103 coil 300, later can to sealed glue of injecting in the coil holding chamber 1103, so that iron core 200 coil 300 is fixed in on the metal sheet 110.
As shown in fig. 3 and 4, the outer circumference of the core 200 is wrapped by at least one insulating layer 400, and the coil 300 and the metal plate 110 are disposed outside the insulating layer 400. The core 200 is prevented from directly contacting the metal plate 110 to block eddy current. The insulating layer 400 may be insulating paper, and the metal plate 110 and the coil 300 are disposed outside the insulating layer 400.
Fig. 5 shows a single-stator dual-rotor axial magnetic field motor, which includes the stator of the above-mentioned embodiment, and further includes two rotors 500, a rotating shaft 600 and two bearings 700, wherein the rotating shaft 600 is inserted into the center of the metal bearing seat 120, the bearing 700 is arranged between the rotating shaft 600 and the metal bearing seat 120, the rotors 500 are fixed on the rotating shaft 600, and the two rotors 500 are retained at both axial sides of the stator 100 by air gaps.
Referring to fig. 5, the rotor 500 includes a rotor disc 510 and a plurality of magnetic steels 520, the plurality of magnetic steels 520 are circumferentially spaced on the rotor disc 510, and the magnetic steels 520 are air-gap-retained with the iron core 200. When the magnetic steel 520 is disposed on the rotor disc 510, the magnetic steel 520 slightly protrudes from the surface of the rotor disc 510 to be air-gap-fitted with the iron core 200.
The above-mentioned embodiments are only used for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to limit the scope of the present invention in terms of implementation, which is not limited by the present embodiment, i.e. all equivalent changes or modifications made in accordance with the spirit disclosed by the present invention still fall within the scope of the present invention.
Claims (10)
1. A stator casing (100), comprising:
the stator structure comprises a metal plate (110), wherein a plurality of iron core mounting parts (1101) which are circumferentially arranged at intervals are arranged on the metal plate (110), a plurality of stator flow breaking seams (1102) are formed in the metal plate (110), and the stator flow breaking seams (1102) are communicated with the iron core mounting parts (1101) and the inner edge of the metal plate (110) in the radial direction;
a metal bearing seat (120), the metal bearing seat (120) being connected to an inner edge of the metal plate (110);
at least one insulating member (130), the insulating member (130) being connected between the metal bearing housing (120) and an inner edge of the metal plate (110).
2. The stator case (100) of claim 1, wherein the metal plate (110) comprises a base plate portion (111), an inner edge portion (112) and an outer edge portion (113), the base plate portion (111) being connected between the inner edge portion (112) and the outer edge portion (113) to form a coil receiving cavity (1103) at least one side of the base plate portion (111) in an axial direction, the core mounting portion (1101) being disposed on the base plate portion (111).
3. The stator housing (100) of claim 2, wherein the core mounting portion (1101) axially extends through the substrate portion (111) and communicates with the coil receiving cavities (1103) located on both axial sides of the substrate portion (111).
4. The stator casing (100) of claim 2, further comprising:
and the pressing plate (140) is clamped with the metal bearing seat (120) and wraps the inner side part (112), and an insulating piece (130) is arranged between the pressing plate (140) and the inner side part (112).
5. The stator casing (100) of claim 4, wherein the metal bearing seat (120) comprises a bearing end portion (121) and a bearing bottom portion (122) connected to each other, the bearing end portion (121) and the pressure plate (140) are respectively connected to two axial end faces of the inner side portion (112), the bearing bottom portion (122) is connected to an inner ring of the inner side portion (112), and the pressure plate (140) is connected to the bearing bottom portion (122) in a clamping manner.
6. The stator casing (100) of claim 1, wherein the stator shut-off slots (1102) extend axially through the metal plate (110).
7. The stator casing (100) of claim 1, wherein the number of the stator shut-off slots (1102) is the same as the number of the core mounting portions (1101), and each core mounting portion (1101) is correspondingly communicated with one stator shut-off slot (1102).
8. The stator casing (100) of claim 1, wherein the core mounting portion (1101) is trapezoidal, an upper trapezoidal base of the core mounting portion (1101) faces inward, and a lower trapezoidal base of the core mounting portion (1101) faces outward.
9. An axial field motor stator, comprising a stator housing (100) according to any of claims 1 to 8, the axial field motor stator further comprising:
a plurality of iron cores (200), wherein each iron core mounting part (1101) is provided with one iron core (200);
a plurality of coils (300), and at least one coil (300) is arranged on the outer ring of each iron core (200).
10. The axial field motor stator according to claim 9, wherein the core (200) is wrapped at its outer circumference with at least one insulating layer (400), and the coil (300) and the metal plate (110) are disposed outside the insulating layer (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223192000.5U CN218633465U (en) | 2022-11-30 | 2022-11-30 | Stator casing and axial magnetic field motor stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223192000.5U CN218633465U (en) | 2022-11-30 | 2022-11-30 | Stator casing and axial magnetic field motor stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218633465U true CN218633465U (en) | 2023-03-14 |
Family
ID=85451724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223192000.5U Active CN218633465U (en) | 2022-11-30 | 2022-11-30 | Stator casing and axial magnetic field motor stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218633465U (en) |
-
2022
- 2022-11-30 CN CN202223192000.5U patent/CN218633465U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111010008B (en) | Surface-mounted permanent magnet rotor disc of high-strength axial magnetic field motor | |
| US8080908B2 (en) | Cooling structure for rotor core in electric rotating machine | |
| JP2007535644A (en) | Magnetic fluid clutch | |
| KR100252393B1 (en) | Structure of reclaimed magnet type rotor | |
| JP2002171702A (en) | Rotor of rotating machine | |
| CN112879431A (en) | Magnetic suspension bearing, bearing system and motor | |
| CN111600419B (en) | Rotating electrical machine | |
| CN218633465U (en) | Stator casing and axial magnetic field motor stator | |
| CN210225085U (en) | Permanent magnet motor rotor structure for enhancing shielding effect of harmonic magnetic field | |
| CN110380536B (en) | Permanent magnet motor rotor structure for enhancing harmonic magnetic field shielding effect | |
| JP6148206B2 (en) | Rotor for rotating electrical machines | |
| WO2022142318A1 (en) | Magnetic suspension bearing stator assembly and magnetic suspension motor having same | |
| CN214534063U (en) | Magnetic suspension bearing, bearing system and motor | |
| CN113014010B (en) | Rotor subassembly, motor and domestic appliance | |
| CN210957999U (en) | Permanent magnet motor | |
| KR19990048726A (en) | Magnet fixing structure of linear motor | |
| CN210744903U (en) | Rotor assembly of permanent magnet motor | |
| CN220172941U (en) | Motor rotor structure and motor | |
| CN111384802A (en) | Rotor of rotating electric machine | |
| JPH04325846A (en) | Securing method of armature core | |
| CN216530784U (en) | Rotor assembly and axial flux motor | |
| CN115912835A (en) | Directional magnetic field motor and eddy current loss suppression method | |
| CN204761189U (en) | External rotor permanent magnetism direct current motor | |
| CN219420397U (en) | Axial magnetic field motor rotor structure | |
| KR102625653B1 (en) | Flux concentrate type rotor and motor having the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |